| 摘要 |
<p>A liquid dispensing system for example for paints comprises a liquid reservoir (3), a circulating path (1) for the liquid to and from the reservoir, a pump (2) for causing a pressurised flow around the path (1), a three-way valve (4) in the path which is controllable to divert liquid from the path (1) via a second valve (6) to a dispensing nozzle (14). The second valve (6) is biased to a closed position and is openable by the hydraulic pressure of the diverted liquid to permit the diverted liquid to flow to the nozzle (14). In a multiple liquid dispensing system, e.g. a paint blending system, each liquid has its own dispensing system as described above and the plurality of second valves (6) thus provided are disposed in a conical formation with the nozzles directed towards the apex of the cone.</p> |
